The rath at Lislorkan, in County Clare, is one such site, a circular earthwork enclosure whose grassy banks and interior space have survived, in some form, from the early medieval period into the present landscape.

Raths, to use the Irish term, were the farmsteads of early medieval Ireland, typically dating from roughly the fifth to the twelfth centuries. A bank of earth, sometimes reinforced with a ditch or a timber palisade, enclosed a domestic space where families lived, kept livestock, and carried out the work of daily life. Clare is particularly well furnished with such monuments, the county's geology and land use having preserved many examples that elsewhere were ploughed away or built over. The place name Lislorkan itself is worth a moment's attention: the element "lis" is another word for a ringfort enclosure, suggesting that the monument was significant enough to define the locality long after its original function had been forgotten.

Beyond its classification and location, the documentary record for this particular site remains thin, and the specific history of who built it, when, and what became of it lies, for now, beyond easy reach.